Having an RSS feed on your site automatically inflates your numbers, as subscribers poll ever 15 minutes on average. Here's another way to screw up tracking.
terrill.ca | Hacking Google Analytics: "Could it really be that simple?
Turns out it is. Want to scew the statistics of a friends website, how about a competitor? Look up their source code, plug it into your website header and laugh. But don't worry you could run multiple accounts, and hit them both on each page. That way you can keep your stats flowing just like normal. "